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Antufiev, Boris A.,Sun, Ying,Egorova, Olga V.,Bugaev, Nikolay M. Techno-Press 2022 Advances in aircraft and spacecraft science Vol.9 No.1
The physical and mathematical foundations of the heat-shielding composite materials functioning under the conditions of aerodynamic heating of aircraft, as well as under the conditions of the point effect of high-energy radiation are considered. The problem of deformation of a thin shallow shell under the action of a local temperature field is approximately solved. Such problems arise, for example, in the case of local destruction of heat-protective coatings of aircraft shells. Then the aerodynamic heating acts directly on the load-bearing shell of the structure. Its destruction inevitably leads to the death of the entire aircraft. A methodology has been developed for the numerical solution of the entire complex problem on the basis of economical absolutely stable numerical methods. Multiple results of numerical simulation of the thermal state of the locally heated shallow shell under conditions of its thermal destruction at high temperatures have been obtained.
Antufiev, Boris A.,Sun, Ying,Egorova, Olga V.,Bugaev, Nikolay M. Techno-Press 2022 Advances in aircraft and spacecraft science Vol.9 No.1
The physical and mathematical foundations of the heat-shielding composite materials functioning under the conditions of aerodynamic heating of aircraft, as well as under the conditions of the point effect of high-energy radiation are considered. The problem of deformation of a thin shallow shell under the action of a local temperature field is approximately solved. Such problems arise, for example, in the case of local destruction of heat-protective coatings of aircraft shells. Then the aerodynamic heating acts directly on the load-bearing shell of the structure. Its destruction inevitably leads to the death of the entire aircraft. A methodology has been developed for the numerical solution of the entire complex problem on the basis of economical absolutely stable numerical methods. Multiple results of numerical simulation of the thermal state of the locally heated shallow shell under conditions of its thermal destruction at high temperatures have been obtained.
Seo, Hyewon,Jun, Mi Eun,Egorova, Olga A.,Lee, Kyung-Ha,Kim, Kyong-Tai,Ahn, Kyo Han American Chemical Society 2012 Organic letters Vol.14 No.19
<P>To alleviate side reactions identified in an <I>N</I>-propargyl-rhodamine lactam sensing system, we devised the novel reaction-based sensing scheme for gold species based on the alkynophilicity. A fluorescein (2-ethynyl)benzoate underwent Au(III)-promoted ester hydrolysis selectively over other metal ions with high sensitivity, which accompanies a turn-on fluorescence change in pH 7.4 HEPES buffer. The work offers a versatile reactive moiety for the development of gold probes with improved sensing properties.</P><P><B>Graphic Abstract</B> <IMG SRC='http://pubs.acs.org/appl/literatum/publisher/achs/journals/content/orlef7/2012/orlef7.2012.14.issue-19/ol302291c/production/images/medium/ol-2012-02291c_0002.gif'></P><P><A href='http://pubs.acs.org/doi/suppl/10.1021/ol302291c'>ACS Electronic Supporting Info</A></P>
Liquid phase deposition of amorphous In2S3 nanorods: Effect of annealing on phase change
이원주,백수진,R.S. Mane,V.V. Todkar,Olga Egorova,채원석,이수형,한성환 한국물리학회 2009 Current Applied Physics Vol.9 No.11
The indium sulfide (In2S3) nanorods thin films were prepared by wet chemical process. The films were sintered in air atmosphere from 523 to 673 K for 10 min. The chemically deposited In2S3 nanorods thin films were characterized by structural and optical techniques. Effect of annealing revealed change in phase from an amorphous In2S3 to nanocrystalline In2O3 (without changing nanorod morphology) was reflected from enhanced absorbance due to the crystallinity improvement, and then decreased due to the phase change.